/* =============================================
   TOKENS
   ============================================= */
:root {
  --navy:    #0D1B2A;
  --steel:   #1E3A5F;
  --cyan:    #00C2FF;
  --cyan-dim:#0099CC;
  --gray-light: #E8EDF2;
  --gray-mid:   #A0ADB8;
  --white:   #FFFFFF;
  --card-bg: #111E2E;
  --card-border: #1E3A5F;

  --font-mono: 'JetBrains Mono', monospace;
  --font-body: 'Inter', sans-serif;

  --radius: 8px;
  --transition: 0.2s ease;
}

/* =============================================
   RESET & BASE
   ============================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--navy);
  color: var(--gray-light);
  line-height: 1.6;
  font-size: 16px;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { color: #fff; }

ul { list-style: none; }

img { max-width: 100%; display: block; }

/* =============================================
   NAV
   ============================================= */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(13, 27, 42, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--steel);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--cyan);
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray-mid);
  letter-spacing: 0.03em;
  transition: color var(--transition);
}

.nav-links a:hover { color: var(--white); }

.nav-cta {
  background: var(--cyan) !important;
  color: var(--navy) !important;
  padding: 6px 16px;
  border-radius: var(--radius);
  font-weight: 600 !important;
  transition: background var(--transition) !important;
}

.nav-cta:hover { background: #fff !important; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gray-light);
  border-radius: 2px;
  transition: var(--transition);
}

/* =============================================
   MOBILE MENU
   ============================================= */
.mobile-menu {
  display: none;
  position: fixed;
  top: 60px; left: 0; right: 0;
  background: var(--navy);
  border-bottom: 1px solid var(--steel);
  z-index: 99;
  padding: 16px 24px 24px;
}

.mobile-menu.open { display: block; }

.mobile-menu ul { display: flex; flex-direction: column; gap: 16px; }

.mobile-menu a {
  font-size: 1rem;
  color: var(--gray-light);
  font-weight: 500;
}

/* =============================================
   BLINKING CURSOR
   ============================================= */
.blink-cursor {
  display: inline-block;
  color: var(--cyan);
  animation: blink 1s step-end infinite;
}

.cursor { color: var(--cyan); animation: blink 1s step-end infinite; }

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* =============================================
   HERO
   ============================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 100px 24px 60px;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,194,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,194,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px; right: -100px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0,194,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--cyan);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 10px;
}

.hero-sub {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--cyan);
  margin-bottom: 20px;
  font-family: var(--font-mono);
}

.hero-desc {
  font-size: 1rem;
  color: var(--gray-mid);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.btn-primary {
  background: var(--cyan);
  color: var(--navy);
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  transition: background var(--transition), transform var(--transition);
}

.btn-primary:hover { background: #fff; color: var(--navy); transform: translateY(-2px); }

.btn-secondary {
  border: 1px solid var(--steel);
  color: var(--gray-light);
  font-weight: 500;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  transition: border-color var(--transition), color var(--transition);
}

.btn-secondary:hover { border-color: var(--cyan); color: var(--cyan); }

.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

.stat { display: flex; flex-direction: column; }

.stat-num {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--white);
}

.stat-label {
  font-size: 0.78rem;
  color: var(--gray-mid);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* =============================================
   SECTIONS
   ============================================= */
.section { padding: 90px 24px; }

.section-dark { background: rgba(255,255,255,0.02); }

.container { max-width: 1100px; margin: 0 auto; }

.section-path {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--cyan);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  opacity: 0.8;
}

.section-title {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 48px;
}

/* =============================================
   ABOUT
   ============================================= */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-text p {
  color: var(--gray-mid);
  margin-bottom: 16px;
  line-height: 1.8;
  font-size: 0.97rem;
}

/* Terminal widget */
.about-terminal {
  background: #060F18;
  border: 1px solid var(--steel);
  border-radius: var(--radius);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.terminal-header {
  background: #0D1B2A;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--steel);
}

.t-dot {
  width: 11px; height: 11px;
  border-radius: 50%;
  display: inline-block;
}

.t-dot.red    { background: #FF5F57; }
.t-dot.yellow { background: #FEBC2E; }
.t-dot.green  { background: #28C840; }

.t-title {
  margin-left: 8px;
  color: var(--gray-mid);
  font-size: 0.78rem;
}

.terminal-body { padding: 20px; line-height: 2; }

.t-prompt { color: var(--cyan); margin-right: 8px; }

.t-out { color: var(--gray-mid); padding-left: 20px; }

.t-out.green { color: #28C840; }

/* =============================================
   SKILLS
   ============================================= */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.skill-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color var(--transition), transform var(--transition);
}

.skill-card:hover {
  border-color: var(--cyan);
  transform: translateY(-4px);
}

.skill-icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.skill-card h3 {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--white);
  margin-bottom: 14px;
  font-weight: 600;
}

.skill-card li {
  font-size: 0.84rem;
  color: var(--gray-mid);
  padding: 4px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.skill-card li::before {
  content: '→ ';
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

/* =============================================
   PROJECTS
   ============================================= */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition);
}

.project-card:hover { border-color: var(--cyan); }

.project-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.project-card h3 {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--white);
  font-weight: 600;
  margin-bottom: 12px;
}

.project-card p {
  font-size: 0.88rem;
  color: var(--gray-mid);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 18px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.project-tech span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: rgba(0,194,255,0.08);
  color: var(--cyan);
  border: 1px solid rgba(0,194,255,0.2);
  padding: 3px 10px;
  border-radius: 4px;
}

.project-link {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--cyan);
  transition: color var(--transition);
  align-self: flex-start;
}

.project-link:hover { color: #fff; }

/* =============================================
   CERTIFICATIONS
   ============================================= */
.certs-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 700px;
}

.cert-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  gap: 24px;
  transition: border-color var(--transition);
}

.cert-card:hover { border-color: var(--cyan); }

.cert-badge {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: #28C840;
  width: 40px;
  text-align: center;
  flex-shrink: 0;
}

.cert-badge.prog { color: var(--cyan); }

.cert-info h3 {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--white);
  font-weight: 600;
  margin-bottom: 4px;
}

.cert-info p {
  font-size: 0.85rem;
  color: var(--gray-mid);
  margin-bottom: 6px;
}

.cert-status {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.earned-label { color: #28C840; }
.prog-label   { color: var(--cyan); }

/* =============================================
   CONTACT
   ============================================= */
.contact-container { text-align: center; }

.contact-sub {
  color: var(--gray-mid);
  font-size: 0.97rem;
  margin-bottom: 40px;
  margin-top: -32px;
}

.contact-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 14px 24px;
  color: var(--gray-light);
  font-size: 0.9rem;
  transition: border-color var(--transition), color var(--transition);
}

.contact-item:hover { border-color: var(--cyan); color: var(--cyan); }

.c-icon {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--cyan);
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  border-top: 1px solid var(--steel);
  padding: 24px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gray-mid);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }

  .about-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
}

@media (max-width: 520px) {
  .skills-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 2rem; }
  .contact-links { flex-direction: column; align-items: center; }
}

/* =============================================
   REDUCED MOTION
   ============================================= */
@media (prefers-reduced-motion: reduce) {
  .blink-cursor, .cursor { animation: none; }
  .skill-card:hover, .btn-primary:hover { transform: none; }
}